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ASTM D 4956-2005 交通管制用反光板的标准规范

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【英文标准名称】:StandardSpecificationforRetroreflectiveSheetingforTrafficControl
【原文标准名称】:交通管制用反光板的标准规范
【标准号】:ASTMD4956-2005
【标准状态】:作废
【国别】:美国
【发布日期】:2005
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:反光;运载工具反光镜;运输安全;交通管制
【英文主题词】:Retroreflecting;Trafficcontrol;Transportationsafety;Vehiclereflectors
【摘要】:
【中国标准分类号】:R87
【国际标准分类号】:93_080_30
【页数】:12P;A4
【正文语种】:英语


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【英文标准名称】:StandardTestMethodforFieldMeasurementofSoundPowerLevelbytheTwo-SurfaceMethod
【原文标准名称】:双表面法现场测量声功率级的标准试验方法
【标准号】:ASTME1124-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E33.08
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:fieldsoundpower;industrialnoise;machinerynoise;soundpower;two-surfacemethod;Acousticaltests;Ambientsoundpressurelevels;Bandfiltersets;Concavemeasurementsurfaces;Conformalmeasurementsurfaces;Convexmeasurementsurfaces;Fieldtes
【摘要】:Thefunctionandoperationofequipmentinthefieldoftenprecludethemeasurementofthefree-fieldsoundpressurelevelsofasinglepieceofequipmentintheabsenceofinterferingsoundfromotherequipmentoperatingatthesametime.Thetwo-surfacemethodwillprovide,inmostcases,areliableestimateofthenormalsoundpowerlevelsofaspecimenoperatinginanadverseenvironment.Thistestmethodisintendedforuseinthefieldinthepresenceofwhatisnormallyregardedasinterferingbackgroundnoise.ThistestmethodisbasedupontheworkofHubner,andDiehl,butdiffersfromallothercurrentsoundpowermeasurementproceduresbyrequiringsimultaneousmeasurementatbothconformalsurfacesandbyresolvingtime-averagedsoundpressurelevelsatbothsurfacestowithin0.1dB.Thesetwofeatures,simultaneousrecordingand0.1dBresolution,enablesourcesoundpowertobecalculatedwhenthedirectsoundfieldofthesourceisactuallylowerinlevelthantheambientnoise.Theuseofthistestmethodisexpectedtobeprimarilyfortherelativeassessmentofthesoundpowerfromsimilarsourcesorforthepredictionofsoundlevelsinaplantbaseduponmeasurementsofsimilarsourcesinanotherplant.Thistestmethodisbelievedtobecapableofyieldingareasonablygoodestimateofabsolutepowerlevelwithpropercareofapplicationandfullconformancetotheprovisionsofthisprocedure.Thetwo-surfacemethodisapplicableonlywhenthetwomeasurementsurfacescanbephysicallyselectedtoproducepositivevaluesofthedifferenceinaveragesoundpressurelevel.Thatis,theinnersurfacesoundpressurelevelminustheoutersurfacesoundpressurelevelmustbeatleast+0.1dB.Thislimitationappliestoeachfrequencybandandeachconstituentsurfaceareainvestigated.Onlythefrequencybandinwhichazeroornegativedifferenceoccursisitconsideredinvalidandusuallyadjacentbandswillbevalid.Inpractice,onlyrarelywillallthreeone-thirdoctavebandsofagivenoctaveyieldinvaliddataatallconstituentareas.Therefore,lessthancompleteresultsarepermissiblewhenone-thirdoctaveanalysisisusedandfulloctaveresultsarereported.Thetwo-surfacemethodmaynotproduceresultswhentestingsomeverylargemachinesinveryreverberantroomsorinroomshavingavolumelessthanabout20timesthespaceenclosedbyanenvelopearoundthelargerdimensionsofthemachine.Insuchcases,thesoundpressurelevelclosetothemachinemaynotdecreaseinanyregularwaywithincreasingdistancefromamachinesurface,makingitimpossibletoselecttwomeasurementsurfacesproducingpositivedifferencesofsoundpressurelevel.1.1Thistestmethodcoversthefield,orinsitumeasurementofsoundpowerlevelbythetwo-surfacemethod.Thetestmethodisdesignedtominimizetheeffectsofreverberantconditions,directivityofthenoisesourceunderconsideration,andtheeffectsofambientnoisefromothernearbyequipmentoperatingatthesametime.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A42
【国际标准分类号】:17_140_0
【页数】:7P.;A4
【正文语种】:英语


【英文标准名称】:Downholeequipmentforpetroleumandnaturalgasindustries-Progressingcavitypumpsystemsforartificiallift-Part1:Pumps(ISO15136-1:2001);GermanversionENISO15136-1:2001
【原文标准名称】:石油工业和天然气工业用钻孔设备.人工升降机用行进式空腔泵系统.第1部分:泵(ISO15136-1:2001);德文版本ENISO15136-1:2001
【标准号】:DINENISO15136-1-2002
【标准状态】:作废
【国别】:德国
【发布日期】:2002-04
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:空腔;石油;石油工业;定义;钻井;名称与符号;天然气工业;输送装置系统;物料搬运设备;钻探设备;技术数据单;石油和燃气生产设备;规范;天然气;偏心螺旋泵;试验报告;设备;泵;钻孔设备
【英文主题词】:Boreholes;Boringequipment(earthworks);Cavity;Conveyorsystems;Definitions;Designations;Drillingequipment;Eccentricscrewpump;Equipment;Materialshandlingequipment;Naturalgas;Naturalgasindustries;Oilindustries;Petroleum;Pumpingdevices;Pumps;Specifications;Technicaldatasheets;Testreports
【摘要】:Thedocumentprovidesguidelinesandrequirementsforsubsurfaceprogressingcavitypumps(PCP)usedinthepetroleumandnaturalgasindustriesfortheproductionofsingleandmultiphasefluids,basedontheprincipledefinedinISO31(allparts).Itisapplicabletothesubsurfaceprogressingcavitypump.Itrefersto,butisnotapplicableto,intermediatecomponentsandaccessoriesthatarenecessarytomakeacompletepumpingunit.Itdoesnotincluderequirementsforshipping,loadingandtransportation.
【中国标准分类号】:E92
【国际标准分类号】:75_180_10
【页数】:35P.;A4
【正文语种】:德语